The code blocking this came in the original OpenOffice flowfrm.
Either IsInSct() or FindFooterOrHeader() works to resolve
this bug.  I chose FindFooterOrHeader because it seemed
to match the existing targets (docbody, flyframe) better.

Change-Id: I51fc3bdc51c76e290b47ec7b9044780e5b67136c
Reviewed-on: https://gerrit.libreoffice.org/26208Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>